Textfiles.com — Microsoftв® Ms-dosв® 3.3 Reference -

Released alongside the in April 1987, version 3.3 introduced several features that became standard for over a decade:

: It significantly improved support for different languages through COUNTRY.SYS and the ability to switch "code pages" for keyboards and displays. Inside the Reference Manual MicrosoftВ® MS-DOSВ® 3.3 Reference - TEXTFILES.COM

: It was the first version to support the high-density 3.5-inch disks that became the universal standard until the rise of CDs. Released alongside the in April 1987, version 3

: This introduced the ability to copy entire directory trees at once, a massive efficiency boost over the standard COPY command. Released alongside the in April 1987